<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>姓名案例_插值语法实现</title>
  <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<div id="root">
  姓：<input type="text" v-model="firstName"><br/><br/>
  名：<input type="text" v-model="lastName"><br/><br/>
  全名：<span>{{firstName.slice(0,3)}}-{{lastName}}</span>
</div>
</body>
<script type="text/javascript">
  Vue.config.productionTip = false//阻止vue在启动时产生生产提示
  Vue.config.keyCodes.huiche=13
  new Vue({
    el: "#root",
    data: {
      firstName: '张',
      lastName: '三',
    },
    methods: {

    }
  })

</script>
</html>